Second streamer in a Roon system. "Digital for analogue brains"

A rather simple question for some, but for us analogue people still a question.

I have run Roon on a SGC server and Electrocompanient DAC/Streamer in my main system.  All hardwired; no Wifi.

I am setting up a second head phone based system in my upstairs office with spare components and things my children have moved on from ( or have forgotten about).  So far I have a cheap DAC, a nice headphone amp, and a CD player.  I want to add streaming via Roon.  My assumption is that all I need is a streamer which I will plug into one of the many mesh pods that inhabit the walls of our house.

Is that correct?  Or do I need another roon core/server ( can't see why I would but thought I would ask).

Many thanks.  I used to feel like the dad in the comic strip "Zits", but now realize I am approaching the grandpa in "Pickles" ( though no grand kids yet).